Sasuke is really underrated on this site. I truly believe that Sasuke has what it takes to defeat Nagato. Sasuke beats Nagato with high to extremely high difficulty. Here is why: How does Sasuke destroy Chibaku Tensei?To destroy Nagato's Chibaku Tensei it took Naruto's Rasenshuriken, Bee's TBB and Itachi's Yasaka Magatama. Sasuke has enough jutsu to destroy the Chibaku Tensei. And they are:
- Kirin
- Enton: Yasaka no Magatama
- Enton: Susanoo Kagutsuchi
As Sasuke continues using Enton it will spread on the battlefield making easy prep for Kirin. Or if Sasuke wanted to easily create a storm cloud he could just simply fire a couple Yasaka Magatama into the air. Another way Sasuke could destroy the CT orb is by simply slicing it with his Susanoo sword like he did with the God Tree.
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Why Nagato won't be able to absorb Amaterasu? Amaterasu is a jutsu that spawns wherever the user is focused at. Nagato has shown any speed or reaction feats to suggest that he would dodge Amaterasu. He may be able to sense Amaterasu because of the change of pressure but it still doesn't mean he would have enough time to dodge it.
Now if Nagato were to actually get hit by Amaterasu we wouldn't be able to absorb it nor repel the jutsu due to being in extreme pain. When Itachi hit Nagato with Amaterasu Nagato didn't show any sign of being in pain because he was an Edo Tensei. As his body was being burned to a crisp he was regenerating at the same time.
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That is my reasoning as to why Sasuke beats Nagato. If you still think Nagato > Sasuke but EMS Madara(without Kurama > Nagato then you're being biased. If Sasuke's PS feats are on the same scale as Madara's then he beats Nagato quite easily. But still I'm talking about current Sasuke and I think he wins with high to extreme difficulty.
You named 3 S rank jutsu, it took 3 S rank jutsu to destroy CT so are you saying Sasuke will use all 3? Also Nagato can make CT larger than he did for Naruto, he made it to hold 6 tails Naruto who went 8 tails. Also Sasuke have no knowledge of Nagato's jutsu and not knowing it what cost 99% of the people who fought him, even when Naruto had some info Nagato had to be handicapped. Nagato will be using 6POP as well so Sasuke would have to figure out the share vision, that Pein can revive, what powers each pein has, and no idea Deva path has a 5 minute interval. Nagato never used Gedo Mezo in his fight with Naruto nor did he use the 6 elements he masters as a kid. He can use all element jutsus with the Rinnegan.